目录树添加模型，和透明度调整的相关结构及逻辑样式

shuishen

2021-06-09 0ee58233d6e1ab07bc13701f12b60be8dcf9aff7

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<div class="Progress" dojoAttachEvent="mousedown:startDrag">
    
    <div class="ProgressLoaded" dojoAttachPoint="progressLoaded"></div>
    <div class="ProgressPosition" dojoAttachPoint="progressPosition"></div>
    <div class="ProgressHandle" dojoAttachPoint="handle" dojoAttachEvent="mouseover:handleOver, mouseout:handleOut"></div>
</div>